HP StorageWorks Clustered File System (software-only) 3.6.1 Windows Storage Server Edition upgrade guide (T4422 - 96001, August 2008)

Chapter 2: Overview 8
Upgrade All Servers As Quickly As Possible
It is important to upgrade all nodes in the cluster within a short time
frame. We do not recommend running the cluster for an extended period
of time with only some of the nodes upgraded to 3.6.1. This release
introduces a new configuration data repository and a new logging facility
that do not become fully functional until all nodes are upgraded. If the
cluster is only partially upgraded, alerts raised by nodes running 3.6 will
be improperly logged by nodes running 3.4. Also, until the entire cluster
is upgraded, many services that are run on 3.6 nodes must be run as local
system administrator.
HP Clustered File System Changes
You should be aware of the following changes:
• Concatenated dynamic volumes. If your cluster configuration
includes concatenated volumes, we recommend that you recreate
them after completing the HP Clustered File System upgrade. (The
volumes can continue to be concatenated when they are recreated.)
The volume disaster recovery feature cannot be used with a
concatenated dynamic volume that has not been recreated. Striped
dynamic volumes are automatically upgraded to use the new feature
during the 3.6 upgrade.
• Notifiers. The built-in notifiers provided with previous releases of HP
Clustered File System are no longer supported. Existing notifiers will
continue to function until the last server is upgraded. At that point,
the notifiers will be deleted from the configuration. If you are
currently using notifiers, be sure to back up your notifier scripts. After
the upgrade is complete, you will need to recreate the notifiers.
• The stand-alone HP CFS Management Console provided with the 3.2
and 3.4 releases cannot be used to access a node running 3.6.1. You
will need to upgrade the stand-alone console after the HP Clustered
File System upgrade. (The stand-alone HP CFS Management Console
provided with the 3.6 release is backward-compatible and can access
nodes running HP Clustered File System 3.2 or 3.4.)